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gorann

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Everything posted by gorann

  1. Well, it looks like it will now be raining for the next week, so be patient I also need a holder for the filter on the RASA8 / ASI2600 combo and I have ordered one from Artesky in Italy that is supposed to be in at the end of October: https://www.teleskop-express.de/shop/product_info.php/language/en/info/p11535_Artesky-2--Filterhalter-und-T2-Adapter-fuer-Celestron-RASA8-Astrograph.html (I ordered mine directly from Artesky in Italy since I hope it may be faster) Meanwhile, if it clears I will just use the ASI1600MM and Baader UFS 2" filter slider with my Baader filters. I have a High speed Baader Ha and the ordinary Baader 8.5 nm Oiii that seems to work fine at f/2, as seen here on the rear behind of the Lion nebula: https://www.astrobin.com/3g6ee0/C/
  2. Great resolution with the 12 panels - almost as good as a one shot with the RASA
  3. Now when you remind me, a broader bandpass was actually what I was thinking two weeks ago when I ordered it. It arrived yesterday so something is really slowing down packages from the UK - guess it is related to that virus somehow (even more out of topic ).
  4. The plan was to go to Lizard Island in December (I have even invested in a travel scope), but that is not going to happen now. Maybe next year......
  5. Yes, as already said, you nicely separated the blue reflection - many have failed in doing that. Like it!
  6. Thanks Wim! Yes, that is the risk with wide-field imaging, you may find one night that you have done the whole sky
  7. Why the Optolong and not the IDAS - are they about the same or did I not do enough research?
  8. Thanks Steve! Unfortunately, we get clouds too, usually exported from the UK, so I may finallly get some full nights of sleep. But hopefully not for too long. Next time it clears the moon will probably be up so it is NB time - an IDAS NBX dual band filter arrived from FLO today. Would love to try it on the RASA and ASI2600 combo.
  9. Thanks a lot again Ian! Yes, with enough photons collected most of these "dark" nebulae turn out not to be dark at all but quite colourful. I think I am getting addicted to imaging them - so soon I may be into severe abstinence since clouds have settled here for a foreseeable future.
  10. Thanks a lot Adrian! Sharing them is often the best part of the process
  11. At the end of September I caught this dark nebulosity between Cepheus and Cygnus. It is Barnard 150 and next to it is the Fireworks galaxy NGC6946. The ASI2600MC was set at gain 100 (offset 30) and kept at -15°C. 19 x 10 min, so 3.2 hours. Four nights ago I aimed at Barnard 150 with my double rig with the Esprit 150 (with ASI6200MM for Lum) and Esprit 100 (ASI071MC for RGB). Collected 6 hours of Lum and 4.5 hours of RGB. The RGB data from the Esprit 100 was quite anemic and nowhere near as colourful as what I had caught with the RASA, obviously a result of f/5 vs f/2. So instead of making an all Esprit image, I decided to add the lum to my RASA imade. And here it is with added Esprtit 150 lum (about 50%) to the nebula. It did improve it significantly. Like Olly @ollypenrice I see nothing wrong with mixing focal lengths to improve the resolution of key parts of an image - I am mainly into this hobby to produce as pretty images as I can with the gear I have. Here is the post with the original RASA image:
  12. Thanks Dave! Yes, this is a dark site object. I hear that England is pretty much locked down but dark places should still be open, so I assume it is getting there that is the problem.
  13. After an unusual spell of clear nights, rain and clouds have settled here so this will be the last RASA image for a while. Thanks you all for the encouraging comments on my previous ones! This one is maybe not of the same quality since seeing was not the best, and it is a faint object. I found it by surfing in Taurus on Aladin Sky Atlas and did not recognize it until I started processing. Processing was quite challenging for once, and I whent astray with the stars, but after sleeping on it and starting over I finally had a presentable image.
  14. Thanks a lot Mark! The first thought is of course that they are linked since they appear to be in the same spot, but after looking at it for a while I started getting the feeling that there was no obvious interaction and the stars are maybe far behind the filaments. On top of the image, for example, there are two similar lumps of filaments but only one have a major star beneath it.
  15. That makes sense! As you say the filaments are interesting, some being highly directional and some rather chaotic. Thanks a lot by the way!
  16. Really useful - I have to start pushing buttons! I actually downloaded frame-grabs and used curves in PS to see better......
  17. Thanks a lot Sponge! I figure it out and now I know where to start. It was in Aladin I found them (but very faint)
  18. Thanks! Mine too - I am getting addicted to the dark ones
  19. Thank you so much Graham - really great to at least have numbers on the creatures!
  20. So a possibility is that all these filaments have nothing to do with the stars except that they light them up, and that the stars are just moving through, maybe at quite a distance farther away? When I look at it the stars and the filamets are not well associated.
  21. Thanks Andy! The short answer is that I have no preference, it all depends on the objects I aim for. I see it very much like having different lenses for your camera. So, I ended up over the last years to build (I love building) myself three obsies next to each other (I have no shortage of space here on the Swedeish country side). My first obsy now has a Mesu mount that currently holds two Esprit refractors for medium range AP (about 1000 mm FL), one collecting Lum or Ha and one RGB. Then I built a second obsy two years ago for a 14" Meade ACF on an EQ8 to go for smaller galaxies and planetary nebulae with 3.5 m FL, so that can only be used at nights with great seeing. And this summer I built one for a RASA at 400 mm FL. I love them all and they do different things for me, and what they can achieve have been a constant positive surprise. But if you should go for something relatively easy and not too expensive, it should defenitively be the RASA 8 on a NEQ6 class mount. PS. I have so far never managed to run more than two of the three obsies in one night, since imaging is often too much about solving problems at night.....
  22. How interesting! Do you think this movement has something to do with the strange filaments moving through the M45? There is also an area there where the filaments are in a disarray, not sweeping through (on top of your image and to the right on mine). Have you found the wake? This all makes me think again why make only one picture. In this case I think my first version was relatively soft and nice to the eye, but then it did not reveal all the infomation in there. I have for a while been thinking that it would be of value to make several "final" versions that make different statements.
  23. Inspired by Olly's @ollypenricereprocessing of his M45 data I decided to see how much details I could get out of my data, using HiPass filtering and LCE in PS. There is certainly a lot of filaments in this object. Does anyone know how they formed?
  24. Yes, and also built myself three obsies. I have a tendency to go full in when I get interested in something, the story of my life
  25. Thanks so much Dave! Yes, it is a very suggestive shape. I see some kind of flying creature with a trunk and big claws. Not sure about the top one.
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